Sheave-block.



PATENTED DEC. 4, 1906. UKINSON.

T. S. MILLER & J. H. DI

SHEAVE BLOCK. APPLICATION FILED JUNE 27.1005.

2 SHEETS-SHEET] VIII/4V1] i .2.

MJS

T. s. MILLER & J. H.'DIGKINSON. SHEA-YE BLOCK.

APPLIGATION FILEl: JUNE 27. 1905.

2 SHEETS-SHEET 2.

UNITED STATES PATENT ornron.

THOMAS SPENCER MILLER, OF SOUTH ORANGE, AND JOSEPH H. DICKIN- SON, OF MONTCLAIR, NEW JERSEY.

SHEAVE- BLOCK- Patented Dec. 4, 1906.

To all whom it may concern.-

Be it known that we, THOMAS SPENCER MILLER, a resident of South Orange, and J osnrn H; DICKINSON, a resident of Montclair, in the county of Essex'and State of New J erse'y, citizens of the United States, have invented certain new and useful Improvements in sheave-Blocks, of which the following is a specification.

Our invention relates to certain novel and useful improvements in sheave-blocks, and is particularly applicable to an appliance of the class described ada ted to be employed in connection with skid ding apparatus.

In carrying out the present invention it is our purpose to provide a sheave-block which will embody the desirable features of simplicity and durability of construction and conveniencein operation and use- K Our invention consists in the construction, combination, and arrangement of parts set forth in and falling within the scope of the appended claims.

- In the. accompanying drawings like char-.

acters of reference indicate like parts in all the views.

Figure l is a vertical sectional view taken througha block on approximately the line as at of Fig. 2. Fig. 2 is a transverse vertical section view of a block embodying our improvements. Fig. 3 is a detail view of the sheave-bolt, and Fig. 4 is a similar view of the inner bushing surrounding the bolt. Fig. 5 is a view of our improved block in end elevation.

Referring now to the accompanying drawings in detail, A A indicate the s des of the block. These sides are preferably formed of malleable iron and are connected at their upper and lower end portions through the medium of the securing-bolts 5.

6 indicates the swivel-eye of the block, having at its end portion an enlarged head 7, fittingin the grooved parts 8 at the .top of the block and bearing against the shoulders formed by such groove, so that it is impossible forthe eye to be disconnected when the.

sides are properly,bolted and fastened together. The construction and formation of the interior faces of these sides form an im-' portant feature of the invention, inasmuch as we so construct the inner faces of the side members that the sheave-wheel, which is, 'as

ened portion -12 of the sheave.

cross-diameter at its center than at its periphery, may be inserted in position without taking the entire block to pieces.

As will be seen particularly by reference to Fig. 2, each side member is formed with a hole 9 for the passage of the main bolt 10, which bolt supports the sheave 11. The ortion of each face surrounding the bolt-ho e is concave or cut away, as at 12, to form a deression or recess to accommodate the wid- The up er portion of each interior side is also grooved or depressed, as at 13, to accommodate the head f the swivel-eye and the upper run of the rope. The sheave 11, as will be seen by reference to Fig. 2, is formed with a grooved peri hery 14, which is of relatively less crossdlameter than the large central portion of the sheave, and the connecting-Web 15 is lightened by cutting away the metal thereof, as at 16. The enlarged or widenedcentral portion of the sheave is formed by inclined side mem bers 17, making a central chamber 18, in which is adapted to be placed a lubricating material.

19 is the screw-plug for the oil-hole 20, throu h which any suitable lubricant may be introduced to the chamber. Passing 'centrally through the hub of the sheave is the copper bushing 21., made fast with such hub ortion by the securing-screw 22, and such ub is provided with a pluralit of openings 23 to permit the lubricant to ow from the chamber to the 'steel bushing 24, fast with the main bolt or pin 10. TlllS inner or steel bushing 24 is held against movement by means of the key 25', projecting from the shank of the bolt, and while the latter in turn is heldagainst movement relative to the sides of the block byvmeans of a second key projection 26, adapted to enter a small groove in such block. Thus it will be ob served when the block is in use the sheave thereof with its copper bushing is designed to turn upon the steel sleeve or bushing fast with the pin, and consequently lmmovable relative to the main portion of the block.

The steel bushing thus performs the office of a spacer for the sides of the block, and at the same time the copper bushing, having sufficient room endyvise, may rotate easily and freely.

' When it is desired to insert the sheavewheel, it is not necessary to dismantle or'take %part the block-frame, for, as will be seen in 1g. 5, the wheel may easily he slipped in from the side, the recesses on the interior faces accommodating the widened central or hub portions of such wheel. After such insertion the bolt 10 maybe ut in position and the nut 1 0 threaded on tiie end thereof. to remove the sheave it is only necessaryto take out the bolt 10, when the sheave-wheel may be easily withdrawn.

From the above description, taken in connection with the accompanying drawings, the manner of constructing our-improved sheave-block will be readily iinderstoodby those skilled in the art to which it pertains and its many advantages appreciated. By having the hub of the sheave formed with a bronze bushing working upon the steel bushing of the center pin we are enabled to obtain an easy-running sheave which is also selfoiled.

Having thus described our invention, what we claim, and desire to secure by Letters Patent, is

1. A sheave-block recessed on the interior faces of the sidemcnibers thereof, a sheave formed with a relatively widened central portionadapted to lie within therecessed portirns 1 the interior faces, and a bolt passing ti on; 1 the faces and through the sheave.

2. A sheave-block comprising side members recessed on their interior faces, and a sheave-wheel having a widened chambered central portion adapted to fit within the recessed portions of the side members.

3. A sheave-block comprising. side members recessed on their interior faces, each-of such faces having a groove therein to permit the passage of a rope, and a sheave-block formed with a widened central ortion adapted to lie within the recesses of t e face.

4. A sheave-block comprising 'a frame formed of side members, a sheave-wheel, a

bolt passing through said side members and sheave-wheel, a sleeve or bushing fast with said bolt, a second bushing passing through the hub of the sheave-wheel and fast therewith and ada ted to bear u on the bushing of the bolt, t e latter bushing being longer than the bushing of the sheave.

5. A sheave-block comprising a sheave, a frame for said sheave formed of side members having recesses or depressions on the interior faces thereof to accommodate the central portion of the sheave, such sheave having a widened central chambered portion adapted to receive lubricating material.

6. A sheave-block comprising a sheave- Likewise wheel, frame formed of side members withlong bushing surrounding said bolt, and a second relatively short bushing of relatively softer material than the first-m entioned bushing fast with the sheave-wheel and ada ted to bear against tlfe first-mentioned bus ling or sleeve/1 I 7. A sheave-block comprising a frame formed of side members, a sheave-wheel mounted therein, a bolt passing through said frame and sheave-wheel, a bushing extending through the hub portion of the wheel, and a relatively longer bushing surrounding the bolt against which the bushing of the sheave-wheel is adapted to bear.

8. The combination of a frame plurality of side members having recesses on. the interior faces thereof, -a'sheavewheel formed with a widened u'b (or central portion adapted to lie withi 1 t e recessed portions of the side members, a olt securing the sheave-wheel withinpthe frame, a bushing or sleeve passmg through the central portion of the sheave-wheel, and a relatively longer bushing or sleeve surrounding the bolt and against which the bushing of the sheave is adapted to turn.

9. The combination of a frame formed of side members, a sheave-wheel mounted therein, a bolt passing through said frame and sheave-wheel,v a bushing for said sheavewheel and a relatively longer bushing or sleeve surrohnding the bolt.

10. In a sheave-block, a frame, and a sheave-wheel rotatably mounted in the frame, such wheel having a relatively widened central portion. I

11. In a sheave b lock, a frame and a sheave-wheel rotatably mounted in the frame, said wheel having a relatively widened chambered portion.

12. A sheave-block comprising side members recessed on their interior faces, a sheavewheel formed with a widened central chamberedportion adapted to lie within the recesses of the faces, a bolt passing through the bases and the sheave-wheel, a bushing surrounding said bolt, and a second bushing connected to the sheave-wheel and bearing against the first-mentioned bolt and having an aperture therein through which a lubriformed of a I eating material may pass from the chambered portion through to the bushing surrounding the bolt.

In testimony whereof we have signed our names to this specification in the presence of 

